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High EGT readings

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arplnplt(at)gmail.com
Guest

Posted: Mon Aug 08, 2011 6:13 am Post subject: High EGT readings

I just finished my 40 hour phase I this weekend and noticed for the last few hours that my #1 and #2 EGT temp readings are a bit higher than the rest during low power settings.  Would this be a sign of failing probes or something else?



Dave Leikam

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Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Mon Aug 08, 2011 6:37 am Post subject: High EGT readings

Not likely anything is wrong. you may want to download and graph what data you have, but you aren't going to have uniform balance at all power settings. If you have a tight spread at your normal cruise, that is about as good as you can hope for.

 Only if something has changed over last flight or two would I be looking for anything.



On Mon, Aug 8, 2011 at 7:10 AM, David Leikam <arplnplt(at)gmail.com (arplnplt(at)gmail.com)> wrote:

  	  Quote: 	
		  --> RV10-List message posted by: David Leikam <arplnplt(at)gmail.com (arplnplt(at)gmail.com)>

  

 I just finished my 40 hour phase I this weekend and noticed for the last few hours that my #1 and #2 EGT temp readings are a bit higher than the rest during low power settings.  Would this be a sign of failing probes or something else?

  

 Dave Leikam

 

	




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Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

Tim Olson

Joined: 25 Jan 2007
Posts: 2872

Posted: Mon Aug 08, 2011 6:56 am Post subject: High EGT readings

This is the problem with today's high res digital Engine Monitors...

Now days you can SEE the exact number, and it makes you worry about

things that would never have been a concern if you didn't have a

string of real numbers in front of you.  of course, now days you

can use these exacting numbers to see problems coming early

on too. ... so there is a benefit.   It just takes a bunch of flight 

hours in varied conditions to start to see a real baseline normal.



Tim Olson - RV-10 N104CD

do not archive

On 8/8/2011 9:33 AM, Kelly McMullen wrote:

 	  Quote: 	
		   Not likely anything is wrong. you may want to download and graph what

 data you have, but you aren't going to have uniform balance at all power

 settings. If you have a tight spread at your normal cruise, that is

 about as good as you can hope for.

 Only if something has changed over last flight or two would I be looking

 for anything.



 On Mon, Aug 8, 2011 at 7:10 AM, David Leikam <arplnplt(at)gmail.com

 <mailto:arplnplt(at)gmail.com>> wrote:



     

     <mailto:arplnplt(at)gmail.com>>



     I just finished my 40 hour phase I this weekend and noticed for the

     last few hours that my #1 and #2 EGT temp readings are a bit higher

     than the rest during low power settings.  Would this be a sign of

     failing probes or something else?



     Dave Leikam



 *

 *

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toaster73(at)embarqmail.c
Guest

Posted: Mon Aug 08, 2011 9:52 am Post subject: High EGT readings

I just had an experience with this in an RV-6.  The #1 cylinder was reading

100 deg hotter than the rest in cruise. Turns out to be a deposit on the

spark plug. It did not show up on mag check until later. SO I think the

monitor did pick up the issue before the next mag check.  Cleaned plug and

all is well and temps back into alignment.

-Chris Lucas

#40072

  



--

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Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Mon Aug 08, 2011 12:40 pm Post subject: High EGT readings

You can detect that either by in-flight mag check or mag check on the ground. When you go to single mag the EGT should go up about 100 degrees on all cylinders. If it doesn't on one or drops off, that plug is suspect.

 

On Mon, Aug 8, 2011 at 10:44 AM, Chris <toaster73(at)embarqmail.com (toaster73(at)embarqmail.com)> wrote:

[quote] --> RV10-List message posted by: "Chris" <toaster73(at)embarqmail.com (toaster73(at)embarqmail.com)>

 

 I just had an experience with this in an RV-6.  The #1 cylinder was reading

 100 deg hotter than the rest in cruise. Turns out to be a deposit on the

 spark plug. It did not show up on mag check until later. SO I think the

 monitor did pick up the issue before the next mag check.  Cleaned plug and

 all is well and temps back into alignment.

 -Chris Lucas

 #40072

 

 

 --

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_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

Bob Turner

Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

Posted: Tue Aug 09, 2011 3:36 pm Post subject: Re: High EGT readings

I've seen an engine monitor pick up a weak mag or plug that passed the usual runup check. Full power operation is more demanding.

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Bob Turner
RV-10 QB

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